名校
解题方法
1 . 已知函数
是定义域为
的偶函数,当
时,
,若关于
的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682e9680b0cd008aae91eea8696c954.png)
有且只有
个不同实数根,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c6e503d067201c27d750de525f4349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682e9680b0cd008aae91eea8696c954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa76a059e95088cc306d55ce17b748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 已知函数f(x)=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a29aa0e67c2e15d668e204d22501e3.png)
解关于x的不等式f(2x)+(a-1)f(x)>a
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a29aa0e67c2e15d668e204d22501e3.png)
解关于x的不等式f(2x)+(a-1)f(x)>a
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2017-08-17更新
|
559次组卷
|
2卷引用:贵州省遵义航天高级中学2016-2017学年高一下学期第三次月考数学试题
名校
解题方法
3 . 已知数列
的前
项和为
,且满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e34b7128cb774257e8a11446e329e1.png)
(1)求数列
的通项公式;
(2)若存在
,使得
成等差数列,试判断:对于任意的
,且
是否成等差数列,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e34b7128cb774257e8a11446e329e1.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288a21901d2867e0d7801bed48265a33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6b18b109a656b62fb173680ae99ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa69c429dff2acd659c6bcbc20a50245.png)
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4 . 当
时,关于x的不等式
的解集中整数恰好有3个,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2349e3509799b01ce88ce91a0d7dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea5723c1447e273f5541b952ab453af.png)
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